Bluetooth accessories that let you keep tabs of your stuff aren't exactly new, but few are as charming and well-designed as hippih's hipKey, at least from our initial impressions. Created and designed in Denmark, the tiny crescent-shaped device made its US debut at CES 2013 after a couple of very successful months abroad -- it apparently sold out just five days after it was available through Apple Online Europe. It connects to any iOS device with Bluetooth 4.0, where you can either use the hipKey to keep track of your iPhone or iPad or use a handy iOS app to keep track of the device itself. Just hook it up to your precious belongings and you'll know where they are via vibrations or an alarm. You can also use "Child Mode" to record what a child was wearing in case you lose him/her in a crowd. Additionally, there's a patent-pending Safe Zone feature that lets you create alarm-free locations so you don't accidentally set it off when at home or the office.

We had chance to try the hipKey out in person, and were impressed by its small and discreet size. Made out of anodized aluminium, it's incredibly pocket-friendly and only has a couple of buttons so the controls are easy to comprehend. The alarm goes as loud as 90db and the vibrations seems pretty easy to detect. We only had a second or two to try the app out, but that appeared quite intuitive as well. It's difficult to say whether this will be that useful in real life, but we'll need to test it out for an extended period to find that out. According to a hippih spokesperson, the hipKey will be available from the Apple store in the US starting January 15th for $90 each.